1 files changed, 110 insertions, 0 deletions
diff --git a/ACE/ace/Monitor_Control/Windows_Multi_Instance_Monitor.cpp b/ACE/ace/Monitor_Control/Windows_Multi_Instance_Monitor.cpp
new file mode 100644
index 00000000000..f674078b69a
--- /dev/null
+++ b/ACE/ace/Monitor_Control/Windows_Multi_Instance_Monitor.cpp
@@ -0,0 +1,110 @@
+// $Id$
+
+#include "ace/Monitor_Control/Windows_Multi_Instance_Monitor.h"
+
+#if defined (ACE_HAS_WIN32_PDH)
+
+#include "ace/Log_Msg.h"
+#include "ace/SString.h"
+#include "ace/os_include/os_pdhmsg.h"
+
+ACE_BEGIN_VERSIONED_NAMESPACE_DECL
+
+namespace ACE
+{
+  namespace Monitor_Control
+  {
+    Windows_Multi_Instance_Monitor::Windows_Multi_Instance_Monitor (
+      const ACE_TCHAR *wildcard_path)
+      : value_ (0.0)
+      , instances_ (0)
+      , n_instances_ (0)
+      , status_ (ERROR_SUCCESS)
+    {
+      /// Create a string which is a concatentation of the path
+      /// name of each 'instance' we need to monitor.
+
+      DWORD paths_size = 4096;
+      ACE_LPSTR paths = (ACE_LPSTR) GlobalAlloc (GPTR, paths_size);
+
+      this->status_ = ACE_TEXT_PdhExpandCounterPath (wildcard_path,
+                                                     paths,
+                                                     &paths_size);
+
+      if (PDH_MORE_DATA == static_cast<DWORD> (this->status_))
+        {
+          ++paths_size;
+          GlobalFree (paths);
+          paths = (ACE_LPSTR) GlobalAlloc (GPTR, paths_size);
+
+          this->status_ = ACE_TEXT_PdhExpandCounterPath (wildcard_path,
+                                                         paths,
+                                                         &paths_size);
+        }
+
+      if (PDH_CSTATUS_VALID_DATA != static_cast<DWORD> (this->status_))
+        {
+          ACE_ERROR ((LM_ERROR,
+                      ACE_TEXT ("%s: PdhExpandCounterPath failed\n"),
+                      wildcard_path));
+        }
+
+      ACE_LPSTR path = paths;
+
+      /// Create a regular Windows monitor for each path name.
+      while (*path != 0)
+        {
+          Windows_Monitor *instance = new Windows_Monitor (path);
+          this->instances_.enqueue_tail (instance);
+          path += ACE_OS::strlen (path) + 1;
+        }
+
+      GlobalFree (paths);
+    }
+
+    Windows_Multi_Instance_Monitor::~Windows_Multi_Instance_Monitor (void)
+    {
+      Windows_Monitor *instance = 0;
+
+      /// Destroy the single instance monitors created in the constructor.
+      while (this->instances_.dequeue_head (instance) == 0)
+        {
+          delete instance;
+        }
+    }
+
+    void
+    Windows_Multi_Instance_Monitor::update_i (void)
+    {
+      Windows_Monitor **current_instance = 0;
+
+      /// Sum the values of each single instance monitor.
+      for (INSTANCES_ITERATOR i (this->instances_); !i.done (); i.advance ())
+        {
+          i.next (current_instance);
+
+          (*current_instance)->update_i ();
+
+          this->value_ += (*current_instance)->value_;
+        }
+    }
+    
+    void
+    Windows_Multi_Instance_Monitor::clear_impl (void)
+    {
+      Windows_Monitor **current_instance = 0;
+
+      /// Sum the values of each single instance monitor.
+      for (INSTANCES_ITERATOR i (this->instances_); !i.done (); i.advance ())
+        {
+          i.next (current_instance);
+
+          (*current_instance)->clear_impl ();
+        }
+    }
+  }
+}
+
+ACE_END_VERSIONED_NAMESPACE_DECL
+
+#endif /* defined (ACE_HAS_WIN32_PDH) */